CN217401227U - Fan and cleaning equipment - Google Patents
Fan and cleaning equipment Download PDFInfo
- Publication number
- CN217401227U CN217401227U CN202221364033.0U CN202221364033U CN217401227U CN 217401227 U CN217401227 U CN 217401227U CN 202221364033 U CN202221364033 U CN 202221364033U CN 217401227 U CN217401227 U CN 217401227U
- Authority
- CN
- China
- Prior art keywords
- fan
- outer cylinder
- cylinder
- assembly
- impeller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a fan, which comprises a shell component, a fan cover, an impeller and a first-stage diffuser, wherein the shell component comprises an outer cylinder body and an installation structure arranged in the outer cylinder body, and the installation structure is connected with a stator component and a rotor component; the fan cover is connected with the shell component; the impeller is positioned in the fan cover and is connected with the rotating shaft of the rotor assembly; the first-stage diffuser is connected to the shell assembly; wherein, along casing assembly's radial, the wall thickness of outer barrel is T1, and the biggest external diameter of outer barrel is R2, satisfies: 11 is less than or equal to R2/T1 is less than or equal to 16. The rotor assembly drives the impeller to rotate at a high speed, the impeller and the fan cover are matched to generate high-speed airflow, and the high-speed airflow is diffused through the first-stage diffuser to generate large suction force and meet the use requirement of cleaning equipment. The ratio range of the wall thickness (T1) of the outer cylinder body to the maximum outer diameter (R2) is 11-16, so that the air flow impact and diffusion loss can be effectively reduced, the aerodynamic noise of the fan is reduced, and the running noise of the fan is improved.
Description
Technical Field
The utility model relates to the technical field of household appliances, in particular to fan and cleaning equipment.
Background
In the related art, some cleaning devices employ a fan as a power source, such as a hand-held cleaner. When the motor of the fan drives the impeller to rotate, a large vacuum degree is formed at the inlet of the fan cover, airflow is sucked from the opening of the fan cover, and flows out through the downstream diffuser after obtaining large kinetic energy through the flow passage of the impeller. The fan adopted by the handheld dust collector has the characteristics of small volume, high rotating speed and the like, but the problem of high noise caused by small volume and high rotating speed is to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a fan can effective noise reduction.
The utility model discloses propose simultaneously the cleaning device who adopts above-mentioned fan.
The fan according to the embodiment of the first aspect of the present invention comprises a housing assembly, a fan housing, an impeller and a first-stage diffuser, wherein the housing assembly comprises an outer cylinder and a mounting structure arranged in the outer cylinder, and the mounting structure is connected with a stator assembly and a rotor assembly; the fan cover is connected to the shell component; the impeller is positioned in the fan cover and is connected with the rotating shaft of the rotor assembly; the first-stage diffuser is connected to the shell assembly; wherein, along the radial of casing subassembly, the wall thickness of outer barrel is T1, and the maximum external diameter of outer barrel is R2, satisfies: 11 is less than or equal to R2/T1 is less than or equal to 16.
According to the utility model discloses fan of the first aspect embodiment has following beneficial effect at least: the rotor assembly drives the impeller to rotate at a high speed, the impeller and the fan cover are matched to generate high-speed airflow, and the high-speed airflow is diffused through the first-stage diffuser to generate large suction force and meet the use requirement of cleaning equipment. The ratio range of the wall thickness (T1) of the outer cylinder body to the maximum outer diameter (R2) is 11-16, so that the air flow impact and diffusion loss can be effectively reduced, the aerodynamic noise of the fan is reduced, and the running noise of the fan is improved.
According to some embodiments of the first aspect of the present invention, the wall thickness of the outer cylinder is at least 1.8 mm.
According to some embodiments of the first aspect of the present invention, the mounting structure includes an inner cylinder, the inner cylinder with a plurality of second-stage blades are arranged between the outer cylinder to form a second-stage diffuser, along the radial direction of the casing assembly, the inner cylinder with the distance between the outer cylinder is W3, the outer diameter of the inner cylinder is R4, and the following requirements are satisfied: R4/W3 is more than or equal to 6.5 and less than or equal to 10.
According to some embodiments of the first aspect of the present invention, the inner cylinder and the distance between the outer cylinders are 3mm to 3.5 mm.
According to some embodiments of the first aspect of the present invention, the outer cylinder body deviates from the one end of the fan housing is a first end, the second-stage blade deviates from the one end of the fan housing is a second end, and follows the axial direction of the housing assembly, the second end is located the first end and between the fan housings.
According to some embodiments of the first aspect of the present invention, the length of the secondary blade is less than or equal to the distance between the second end and the first end in the axial direction of the housing assembly.
According to the utility model discloses some embodiments of the first aspect, the one-level diffuser is provided with the installation section of thick bamboo, interior barrel is provided with and is used for holding the mounting groove of installation section of thick bamboo is followed casing assembly's radial, the outer wall of installation section of thick bamboo with the outer wall of interior barrel flushes.
According to some embodiments of the first aspect of the present invention, the periphery of the fan housing is provided with a direction the connecting cylinder of the outer cylinder, the outer wall of the outer cylinder is provided with a groove, the connecting cylinder cartridge in the groove.
According to some embodiments of the first aspect of the present invention, the connection between the inner wall surface of the fan housing and the inner wall surface of the outer cylinder is smooth.
According to the utility model discloses cleaning device of second aspect embodiment contains the fan of first aspect embodiment.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a fan according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a first schematic structural diagram of a housing assembly according to an embodiment of the present invention;
fig. 4 is a second schematic structural diagram of the housing assembly in the first embodiment of the present invention;
fig. 5 is a sectional view of the housing assembly in an embodiment of the first aspect of the present invention;
fig. 6 is a schematic structural diagram of a first-stage diffuser in an embodiment of the present invention;
fig. 7 is a front view of a first-stage diffuser according to an embodiment of the present invention;
fig. 8 is a cross-sectional view of a one-stage diffuser according to an embodiment of the present invention.
The reference numbers are as follows:
the structure comprises a shell component 100, a diffusion passage 101, a secondary diffusion passage 102, a mounting structure 110, an inner cylinder 111, a mounting groove 112, an outer cylinder 120, a first end 121, a groove 122, a secondary blade 130 and a second end 131;
a stator assembly 200;
a rotor assembly 300, a rotation shaft 310;
a first-stage diffuser 400, a first-stage blade 410, and a mounting tube 420;
an impeller 500;
a fan housing 600 and a connecting cylinder 610;
a control panel 700.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
A cleaning apparatus is an apparatus for cleaning dust, of which a vacuum cleaner is the most commonly used cleaning apparatus. The working principle of the dust collector is that a fan in the dust collector runs at a high speed, air and dust are sucked from a dust suction port, the dust is retained in a filter element, and the filtered air is discharged to the outside of the dust collector.
The fan is a core component of the dust collector and is used as a power source of the dust collector. The main components of the fan comprise a casing, a fan cover, a diffuser and an impeller. The diffuser and the shell are kept relatively static (fixedly connected), the impeller rotates at a high speed under the drive of the rotor, and air around the impeller is thrown out under the action of centrifugal force and has larger radial and tangential speeds. On one hand, negative pressure is formed inside the fan cover, and external air continuously flows to the impeller from the air inlet of the fan cover; on the other hand, the high-speed airflow thrown out by the impeller passes through the blades on the diffuser and is finally discharged. Along with the high-speed rotation of the impeller, the fan can continuously suck air, and the functional requirements of the dust collector are met.
When the fan is in a working state, the impeller rotates to generate airflow, and the flow velocity of the airflow is reduced when the airflow flows through the diffuser, so that the kinetic energy of the airflow is converted into static pressure energy, and the pressurization is realized. Diffusers can be divided into vaned and vaneless diffusers, which, as the name implies, are diffusers provided with vanes that, by their shape and angle, restrict the direction of flow and force the flow to pass through a passage of a given geometry to achieve smaller size and lower flow losses. The utility model relates to a diffuser is vaned diffuser, and following called diffuser is vaned diffuser. Specifically, the gas flow passes through a passage formed between two adjacent blades of the diffuser, and the flow velocity of the gas is reduced in the flowing process, so that the purpose of pressurization is achieved.
As shown in fig. 1, an embodiment of the first aspect of the present invention provides a blower, the blower includes a housing assembly 100, a stator assembly 200, a rotor assembly 300, a first-stage diffuser 400, an impeller 500, a fan housing 600 and a control panel 700, the housing assembly 100 is a main body of the blower, a mounting structure 110 is disposed inside the housing assembly 100, the stator assembly 200 and the rotor assembly 300 are mounted in the mounting structure 110, the stator assembly 200 is fixed to a stator mounting portion of the mounting structure 110, the rotor assembly 300 can rotate relative to the stator assembly 200, and the rotor assembly 300 and the stator assembly 200 constitute a driving mechanism; the fan housing 600 is connected to an end of the casing assembly 100, an air guiding cavity is formed inside the fan housing 600, the fan housing 600 is hermetically connected to an outer wall of the casing assembly 100, the impeller 500 is located in the air guiding cavity of the fan housing 600, the rotating shaft 310 of the rotor assembly 300 is fixedly connected to the impeller 500, and the rotor assembly 300 drives the impeller 500 to rotate.
The outer wall of the shell assembly 100 is provided with an outer cylinder 120, a first-stage diffusion channel 101 is formed between the outer cylinder 120 and the mounting structure 110, the first-stage diffusion channel 101 is annular, the first-stage diffusion channel 101 is communicated with the air guide cavity, the first-stage diffuser 400 is fixedly connected to the end of the mounting structure 110, the first-stage diffuser 400 is provided with a plurality of first-stage blades 410, and part of the first-stage blades 410 are located in the first-stage diffusion channel 101; the casing assembly 100 is further provided with a secondary diffuser passage 102, the secondary diffuser passage 102 being located downstream of the primary diffuser passage 101, the secondary diffuser passage 102 having a plurality of secondary vanes 130 disposed therein. The control plate 700 is connected to one end of the casing assembly 100, which is away from the wind shield 600, the control plate 700 is electrically connected to the stator assembly 200, and the control plate 700 controls the driving mechanism to operate.
When the fan is in operation, the rotor assembly 300 drives the impeller 500 to rotate at a high speed, the impeller 500 and the fan cover 600 cooperate to generate a high-speed airflow, the high-speed airflow flows into the diffuser passage 101, and the airflow is decelerated and the pressure is increased by the action of the plurality of first-stage blades 410 of the first-stage diffuser 400.
As shown in fig. 3 to 5, the outer cylinder 120 is an outer wall of the casing assembly 100, the outer cylinder 120 surrounds the mounting structure 110 and the first-stage diffuser 400, the airflow generated by the rotation of the impeller 500 flows inside the outer cylinder 120, the wall thickness of the outer cylinder 120 is T1, the maximum outer diameter of the outer cylinder 120 is R2, the ratio of the wall thickness (T1) of the outer cylinder 120 to the maximum outer diameter (R2) of the outer cylinder 120 is in a range of 11 to 16, and the wall thickness of the outer cylinder 120 and the maximum outer diameter of the outer cylinder 120 have a specific proportional relationship, so that the airflow impact and diffusion loss can be effectively reduced, the sound power level value can be reduced, the aerodynamic noise of the fan can be reduced, and the noise of the fan during operation can be improved.
It is understood that the sound power level is the base 10 logarithm of the ratio of sound power to the reference sound power multiplied by 10 in decibels. The numerical expression thereof is 10lg (W/Wo),the usual reference acoustic power Wo is 10 -12 W. The acoustic power is independent of distance, location or environment, and is a theoretical value as well as an absolute value.
It can be understood that the wall thickness (T1) of the outer cylinder 120 is at least 1.8mm, which can effectively reduce the airflow impact and obtain better noise reduction effect, and the outer cylinder 120 has greater structural strength and rigidity, when the high-speed airflow impacts the inner wall surface of the outer cylinder 120, the outer cylinder 120 can maintain a stable shape, generally, the inner wall surface of the outer cylinder 120 is a cylindrical surface, which can balance and offset the impact force, and the outer cylinder 120 has sufficient wall thickness, which can reduce the vibration and is beneficial to reducing the noise when receiving the high-speed airflow impact.
Referring to fig. 3 to 5, the mounting structure 110 includes an inner cylinder 111, a first-stage diffusion passage 101 and a second-stage diffusion passage 102 are disposed between the inner cylinder 111 and the outer cylinder 120, and a plurality of second-stage blades 130 are disposed in the second-stage diffusion passage 102 to form a second-stage diffuser. The distance between the inner cylinder 111 and the outer cylinder 120 along the radial direction of the casing assembly 100 is defined as W3, that is, the radial width of the secondary diffusion passage 102, the maximum outer diameter of the inner cylinder 111 is defined as R4, the outer diameter of the inner cylinder 111 is the position where the secondary vane 130 is connected to the inner cylinder 111, the ratio of the maximum outer diameter (R4) of the inner cylinder 111 to the outer diameter (W3) of the inner cylinder 111 is in the range of 6.5 to 10, and the distance between the inner cylinder 111 and the outer cylinder 120 has a specific proportional relationship with the outer diameter of the inner cylinder 111, so that the air flow impact and diffusion loss can be effectively reduced, the sound power level value can be reduced, the aerodynamic noise of the fan can be reduced, and the noise of the fan during operation can be improved.
It can be understood that, the distance between the inner cylinder and the outer cylinder is 3mm to 3.5mm, the radial width of the secondary diffusion channel 102 can match the flow velocity of the air flow output by the impeller 500, so as to smoothly guide the air flow away, effectively reduce the air flow impact, and obtain a better noise reduction effect, and the radial width of the secondary diffusion channel 102 has enough space for arranging a plurality of secondary blades 130, so as to meet the requirement of secondary diffusion. Generally, the outer wall surface of the inner cylinder 111 and the inner wall surface of the outer cylinder 120 are both cylindrical surfaces, which can balance and offset the impact force of the airflow, and the wall thickness of the outer cylinder 120 is sufficient, so that when receiving the impact of the high-speed airflow, the vibration is reduced, which is beneficial to reducing the noise.
Referring to fig. 1 and 5, it can be understood that, along the axial direction of the casing assembly 100, an end of the outer cylinder 120 facing away from the wind shield 600 is a first end 121, an end of the secondary blade 130 facing away from the wind shield 600 is a second end 131, and the length of the outer cylinder 120 is designed to exceed that of the secondary blade 130, that is, the second end 131 is located between the first end 121 and the wind shield 600. Considering that the secondary blade 130 is attached to the inner wall surface of the outer cylinder 120, it is generally designed that both ends of the outer cylinder 120 exceed the secondary blade 130. Because the axial position of the first end 121 exceeds the second end 131 in the axial direction of the casing assembly 100, the airflow is limited by the outer cylinder 120 after passing through the secondary blades 130 and moves along the axial direction of the casing assembly 100, and the outer cylinder 120 has a furling effect on the airflow, so that the impact and diffusion loss of the airflow can be effectively reduced, the sound power level value is reduced, the pneumatic noise of the fan is reduced, and the noise generated during the operation of the fan is improved.
It will be appreciated that, in the axial direction of the housing assembly, the length dimension of the secondary blade 130 is defined as L5, the distance between the second end 131 and the first end 121 is defined as L6, the length of the secondary blade 130 is equal to or less than the distance between the second end 131 and the first end 121, i.e., L5 ≦ L6, and not only is the length of the first end 121 greater than the second end 131, but also the excess length is at least the length of the secondary blade 130, typically 30% to 50% of the length dimension of the secondary blade 130. The airflow is limited by the outer cylinder 120 after passing through the secondary blade 130 and moves along the axial direction of the housing assembly 100, and the outer cylinder 120 has a furling effect on the airflow, so that the impact and the diffusion loss of the airflow can be effectively reduced, the sound power level value is reduced, the aerodynamic noise of the fan is reduced, and the operating noise of the fan is improved.
It should be understood that the three structural forms described above: the ratio of the wall thickness (T1) of the outer cylinder 120 to the maximum outer diameter (R2) of the outer cylinder 120 ranges from 11 to 16, the ratio of the maximum outer diameter (R4) of the inner cylinder 111 to the outer diameter (W3) of the inner cylinder 111 ranges from 6.5 to 10, and the second end 131 is disposed at the first end 121 and the wind shield 600, which can be used individually or in combination, and have the same priority, that is, can be arbitrarily combined in the sequence, and have various schemes.
Referring to fig. 1 and 2, it can be understood that the first-stage diffuser 400 is provided with a mounting tube 420, a plurality of first-stage blades 410 are connected to an outer wall surface of the mounting tube 420 and are uniformly distributed along a circumferential direction of the mounting tube 420, the mounting tube 420 is mounted on the mounting structure 110, the inner cylinder 111 is provided with a mounting groove 112 for accommodating the mounting tube 420, as shown in fig. 7 and 8, an outer diameter of the mounting tube 420 is R7, an outer wall of the mounting tube 420 and an outer wall of the inner cylinder 111 are flush in a radial direction of the casing assembly 100, that is, R7 is R4, the outer wall surface of the inner cylinder 111 and the outer wall surface of the mounting tube 420 are the same size in the radial direction of the casing assembly 100, for example, the outer wall surface of the inner cylinder 111 and the outer wall surface of the mounting tube 420 form a smooth cylindrical surface with a uniform radius, when an air flow flows in the first-stage diffuser passage 101 and the second-stage diffuser passage 102, the smooth cylindrical surface facilitates the air flow passage, and can effectively reduce air flow impact and diffusion loss, the sound power level value is reduced, the pneumatic noise of the fan is reduced, and the noise of the fan operation is improved.
It can be understood that, the mounting tube 420 is installed in the installation groove 112 of the inner cylinder 111, the mounting tube 420 and the inner cylinder 111 may be fixed in an interference fit manner, or may be fixed by bonding with glue, the glue can also fill the gap between the mounting tube 420 and the inner cylinder 111, prevent the air flow from flowing away from the gap, eliminate the noise caused by the air flow passing through the gap or the noise caused by the air flow circling around at the gap, reduce the aerodynamic noise of the fan, and improve the noise caused by the operation of the fan.
Referring to fig. 1 and 2, it can be understood that the fan housing 600 is provided at the periphery thereof with a connecting cylinder 610 facing the outer cylinder 120, the outer wall of the outer cylinder 120 is provided with a groove 122, the connecting cylinder 610 is inserted into the groove 122, so as to realize the connection and fixation of the outer cylinder 120 and the connecting cylinder 610, and the connecting structure is located at the outer side of the outer cylinder 120, which is beneficial to reducing the air flow loss. The outer cylinder 120 and the connecting cylinder 610 can be fixed in an interference fit mode, glue can also be adopted for bonding and fixing, the glue can also be used for filling gaps between the outer cylinder 120 and the connecting cylinder 610, air flow loss from the gaps is prevented, noise generated when air flow passes through the gaps or noise generated when the air flow circles around the gaps is eliminated, aerodynamic noise of the fan is reduced, and noise generated when the fan runs is improved.
It can be understood that the connection between the inner wall surface of the fan housing 600 and the inner wall surface of the outer cylinder 120 is in smooth transition, and the two form a smooth curved surface, when the airflow flows in the primary diffusion channel 101 and the secondary diffusion channel 102, the smooth curved surface is beneficial to the airflow to pass through, and can effectively reduce the airflow impact and diffusion loss, reduce the sound power level value, reduce the aerodynamic noise of the fan, and improve the noise of the fan operation.
It should be understood that the inner diameter of the fan housing 600 may be equal to the inner diameter of the outer cylinder 120, and the inner wall surface of the fan housing 600 and the inner wall surface of the outer cylinder 120 form a smooth cylindrical surface; or the inner wall surface of the fan housing 600 and the inner wall surface of the outer cylinder 120 may form a smooth transition curved surface, and the shape of the curved surface has various choices, so that the requirement of less airflow blockage can be met.
The embodiment of the second aspect of the present invention provides a cleaning device, the cleaning device includes the blower fan of the embodiment of the first aspect, the blower fan includes a housing assembly 100, a stator assembly 200, a rotor assembly 300, a first-stage diffuser 400, an impeller 500, a fan housing 600 and a control panel 700, the housing assembly 100 is a main body of the blower fan, an installation structure 110 is arranged inside the housing assembly 100, the stator assembly 200 and the rotor assembly 300 are installed in the installation structure 110, the stator assembly 200 is fixed on a stator installation part of the installation structure 110, the rotor assembly 300 can rotate relative to the stator assembly 200, and the rotor assembly 300 and the stator assembly 200 form a driving mechanism; the wind shield 600 is connected to an end of the casing assembly 100, a wind guiding cavity is formed inside the wind shield 600, the wind shield 600 is hermetically connected to an outer wall of the casing assembly 100, the impeller 500 is located in the wind guiding cavity of the wind shield 600, the rotating shaft 310 of the rotor assembly 300 is fixedly connected to the impeller 500, and the rotor assembly 300 drives the impeller 500 to rotate.
The outer wall of the casing assembly 100 is provided with the outer cylinder 120, the outer cylinder 120 serves as the outer wall of the casing assembly 100, the outer cylinder 120 surrounds the mounting structure 110 and the first-stage diffuser 400, the airflow generated by rotation of the impeller 500 flows inside the outer cylinder 120, the wall thickness of the outer cylinder 120 is T1, the maximum outer diameter of the outer cylinder 120 is R2, the ratio of the wall thickness (T1) of the outer cylinder 120 to the maximum outer diameter (R2) of the outer cylinder 120 is 11-16, and the wall thickness of the outer cylinder 120 of the casing assembly 100 and the maximum outer diameter of the outer cylinder 120 have a specific proportional relationship, so that airflow impact and diffusion loss can be effectively reduced, the sound power level value is reduced, the aerodynamic noise of a fan is reduced, and the operating noise of the fan is improved.
Referring to fig. 3 to 5, the mounting structure 110 includes an inner cylinder 111, a first-stage diffusion passage 101 and a second-stage diffusion passage 102 are disposed between the inner cylinder 111 and the outer cylinder 120, and a plurality of second-stage blades 130 are disposed in the second-stage diffusion passage 102 to form a second-stage diffuser. Along the radial direction of the casing assembly 100, the distance between the inner cylinder 111 and the outer cylinder 120 is defined as W3, that is, the radial width of the secondary diffusion channel 102, the maximum outer diameter of the inner cylinder 111 is defined as R4, the outer diameter of the inner cylinder 111 is the position where the secondary vane 130 is connected with the inner cylinder 111, the ratio of the maximum outer diameter (R4) of the inner cylinder 111 to the outer diameter (W3) of the inner cylinder 111 is in the range of 6.5 to 10, and the distance between the inner cylinder 111 and the outer cylinder 120 has a specific proportional relationship with the outer diameter of the inner cylinder 111, so that the air flow impact and diffusion loss can be effectively reduced, the sound power level value can be reduced, the aerodynamic noise of the fan can be reduced, and the noise of the fan during operation can be improved.
Referring to fig. 1 and 5, in the axial direction of the casing assembly 100, an end of the outer cylinder 120 facing away from the wind shield 600 is a first end 121, an end of the secondary blade 130 facing away from the wind shield 600 is a second end 131, and the length of the outer cylinder 120 exceeds that of the secondary blade 130, that is, the second end 131 is located between the first end 121 and the wind shield 600. Considering that the secondary blade 130 is attached to the inner wall surface of the outer cylinder 120, it is generally designed that both ends of the outer cylinder 120 exceed the secondary blade 130. Because the axial position of the first end 121 exceeds the second end 131 in the axial direction of the casing assembly 100, the airflow is limited by the outer cylinder 120 after passing through the secondary blade 130 and moves along the axial direction of the casing assembly 100, and the outer cylinder 120 has a furling effect on the airflow, so that the impact and diffusion loss of the airflow can be effectively reduced, the sound power level value is reduced, the aerodynamic noise of the fan is reduced, and the noise of the running of the fan is improved.
It will be appreciated that in the axial direction of the housing assembly, the length dimension of the secondary blade 130 is defined as L5, the distance between the second end 131 and the first end 121 is defined as L6, the length of the secondary blade 130 is equal to or less than the distance between the second end 131 and the first end 121, i.e., L5 ≦ L6, and not only is the length of the first end 121 greater than the second end 131, but the excess length is at least the length of the secondary blade 130, typically 30% to 50% of the length dimension of the secondary blade 130. The airflow is limited by the outer cylinder 120 after passing through the secondary blade 130 and moves along the axial direction of the housing assembly 100, and the outer cylinder 120 has a furling effect on the airflow, so that the impact and the diffusion loss of the airflow can be effectively reduced, the sound power level value is reduced, the aerodynamic noise of the fan is reduced, and the operating noise of the fan is improved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge scope of those skilled in the art.
Claims (10)
1. The fan, its characterized in that includes:
the shell assembly comprises an outer cylinder body and an installation structure arranged in the outer cylinder body, and the installation structure is connected with the stator assembly and the rotor assembly;
the fan cover is connected to the shell assembly;
the impeller is positioned inside the fan cover and is connected with the rotating shaft of the rotor assembly;
a first stage diffuser connected to the housing assembly;
wherein, along the radial of casing subassembly, the wall thickness of outer barrel is T1, and the maximum external diameter of outer barrel is R2, satisfies: 11 is less than or equal to R2/T1 is less than or equal to 16.
2. The fan of claim 1 wherein the outer cylinder has a wall thickness of at least 1.8 mm.
3. The fan as claimed in claim 1, wherein the mounting structure includes an inner cylinder, a plurality of secondary blades are disposed between the inner cylinder and the outer cylinder to form a secondary diffuser, a distance between the inner cylinder and the outer cylinder in a radial direction of the casing assembly is W3, and a maximum outer diameter of the inner cylinder is R4, which satisfies: R4/W3 is more than or equal to 6.5 and less than or equal to 10.
4. The fan of claim 3, wherein the distance between the inner cylinder and the outer cylinder is 3mm to 3.5 mm.
5. The fan as claimed in claim 3, wherein an end of the outer cylinder facing away from the fan housing is a first end, and an end of the secondary blade facing away from the fan housing is a second end, and the second end is located between the first end and the fan housing along the axial direction of the housing assembly.
6. The fan of claim 5 wherein the secondary blades have a length, in the axial direction of the housing assembly, that is less than or equal to the distance between the second end and the first end.
7. The fan as claimed in claim 3, wherein the primary diffuser is provided with a mounting cylinder, the inner cylinder is provided with a mounting groove for receiving the mounting cylinder, and an outer wall of the mounting cylinder is flush with an outer wall of the inner cylinder in a radial direction of the housing assembly.
8. The blower according to claim 1, wherein the fan housing is provided at a periphery thereof with a connection barrel facing the outer cylinder, the outer wall of the outer cylinder is provided with a groove, and the connection barrel is inserted into the groove.
9. The fan of claim 8, wherein a junction of an inner wall surface of the fan housing and an inner wall surface of the outer cylinder is smooth.
10. Cleaning apparatus, characterized in that it comprises a fan according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221364033.0U CN217401227U (en) | 2022-06-01 | 2022-06-01 | Fan and cleaning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221364033.0U CN217401227U (en) | 2022-06-01 | 2022-06-01 | Fan and cleaning equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217401227U true CN217401227U (en) | 2022-09-09 |
Family
ID=83145598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221364033.0U Active CN217401227U (en) | 2022-06-01 | 2022-06-01 | Fan and cleaning equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217401227U (en) |
-
2022
- 2022-06-01 CN CN202221364033.0U patent/CN217401227U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113775544A (en) | Electric fan and cleaning equipment | |
| CN113775547A (en) | Electric fan and cleaning equipment | |
| CN113775545A (en) | Electric fan and cleaning equipment | |
| CN215521344U (en) | Electric fan and cleaning equipment | |
| CN215521343U (en) | Electric fan and cleaning equipment | |
| CN215521345U (en) | Electric fan and cleaning equipment | |
| EP1627590B1 (en) | Centrifugal fan for a vacuum cleaner | |
| JP2012180777A (en) | Electric blower, and vacuum cleaner equipped with the same | |
| CN215521386U (en) | Diffuser subassembly, electric fan and cleaning device | |
| EP1618821B1 (en) | Centrifugal fan and vacuum cleaner having the centrifugal fan | |
| CN217401227U (en) | Fan and cleaning equipment | |
| CN113775570A (en) | Diffuser subassembly, electric fan and cleaning device | |
| JP7399682B2 (en) | Electric blower and vacuum cleaner equipped with it | |
| CN215595958U (en) | Electric fan and cleaning equipment | |
| CN115013332A (en) | Fan and cleaning equipment | |
| CN215596000U (en) | Diffuser subassembly, electric fan and cleaning device | |
| JP2018003806A (en) | Electric blower and vacuum cleaner including the same | |
| CN217354843U (en) | Fan and cleaning equipment | |
| EP4394186A1 (en) | Electric blower and cleaning apparatus | |
| CN213787165U (en) | Brushless motor of dust collector | |
| KR100496552B1 (en) | Electric ventilator | |
| CN113530868B (en) | Electric fan and cleaning equipment | |
| WO2023029423A1 (en) | Electric blower and cleaning apparatus | |
| CN114776613A (en) | Fan and cleaning equipment | |
| CN219654913U (en) | Circular centrifugal axial flow fan |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |